IFNAMES(1)							   User Commands							IFNAMES(1)

NAME

       ifnames - Extract CPP conditionals from a set of files

SYNOPSIS

       ifnames [OPTION]... [FILE]...

DESCRIPTION

       Scan all of the C source FILES (or the standard input, if none are given) and write to the standard output a sorted list of all the identi-
       fiers that appear in those files in `#if', `#elif', `#ifdef', or `#ifndef' directives.  Print each identifier on  a  line,  followed  by  a
       space-separated list of the files in which that identifier occurs.

       -h, --help
	      print this help, then exit

       -V, --version
	      print version number, then exit

AUTHOR

       Written by David J. MacKenzie and Paul Eggert.

REPORTING BUGS

       Report bugs to <bug-autoconf@gnu.org>.
       GNU Autoconf home page: <http://www.gnu.org/software/autoconf/>.
       General help using GNU software: <http://www.gnu.org/gethelp/>.

COPYRIGHT

       Copyright  (C) 2012 Free Software Foundation, Inc.  License GPLv3+/Autoconf: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>,
       <http://gnu.org/licenses/exceptions.html>
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       autoconf(1), automake(1), autoreconf(1), autoupdate(1), autoheader(1), autoscan(1), config.guess(1), config.sub(1), ifnames(1), libtool(1).

       The full documentation for ifnames is maintained as a Texinfo manual.  If the info and ifnames programs	are  properly  installed  at  your
       site, the command

	      info ifnames

       should give you access to the complete manual.

GNU Autoconf 2.69						    August 2017 							IFNAMES(1)